Collapsible containers dimensioned to integrate into motor carrier operations are provided. The purge air may be forced through the components in series or in parallel, using a blower; or, the purge air may be allowed to enter the components through a low inlet, whereupon the air rises through the components by natural circulation and exits through a high outlet, along with the residual hydrogen. Reading and writing may each be completed in a single cycle, and during a write operation, data which is different from data previously read is written.